<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			#outdiv
			{
				width: 600px;
				height: 600px;
				border: 1px solid red;
			}
			.div1,.div2,.div3
			{
				width: 200px;
				height: 200px;
				/* float: left;
				margin-left: 20px; */  /* 离左边20px */
			}
			.div1{
				background-color: aliceblue;
				float: left;
				margin-left: 20px;
			}
			.div2{
				background-color: antiquewhite;
				float: right;
			}
			.div3{
				background-color: aquamarine;
				float: left;
			}
		</style>
	</head>
	<body>
		<div id="outdiv">
			 <div class="div1"><center><span>林润钿</span></center></div>
		     <div class="div2">戴阳</div>
		      <div class="div3">白敬亭</div>
		</div>
		
	</body>
</html>